direct-io.hg

view tools/libxc/xc_solaris.c @ 12988:e080700efa56

[TOOLS] Fix the build. Clearly demarcate PPC-specific stuff.
Signed-off-by: Keir Fraser <keir@xensource.com>
author kfraser@localhost.localdomain
date Wed Dec 13 10:23:53 2006 +0000 (2006-12-13)
parents f7b7daed94d6
children 59b8d5168cc1
line source
1 /******************************************************************************
2 *
3 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
4 * Use is subject to license terms.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation, version 2 of the
9 * License.
10 */
12 #include "xc_private.h"
14 #include <xen/memory.h>
15 #include <xen/sys/evtchn.h>
16 #include <unistd.h>
17 #include <fcntl.h>
19 int xc_interface_open(void)
20 {
21 int flags, saved_errno;
22 int fd = open("/dev/xen/privcmd", O_RDWR);
24 if ( fd == -1 )
25 {
26 PERROR("Could not obtain handle on privileged command interface");
27 return -1;
28 }
30 /* Although we return the file handle as the 'xc handle' the API
31 does not specify / guarentee that this integer is in fact
32 a file handle. Thus we must take responsiblity to ensure
33 it doesn't propagate (ie leak) outside the process */
34 if ( (flags = fcntl(fd, F_GETFD)) < 0 )
35 {
36 PERROR("Could not get file handle flags");
37 goto error;
38 }
39 flags |= FD_CLOEXEC;
40 if ( fcntl(fd, F_SETFD, flags) < 0 )
41 {
42 PERROR("Could not set file handle flags");
43 goto error;
44 }
46 return fd;
48 error:
49 saved_errno = errno;
50 close(fd);
51 errno = saved_errno;
52 return -1;
53 }
55 int xc_interface_close(int xc_handle)
56 {
57 return close(xc_handle);
58 }
60 void *xc_map_foreign_batch(int xc_handle, uint32_t dom, int prot,
61 xen_pfn_t *arr, int num)
62 {
63 privcmd_mmapbatch_t ioctlx;
64 void *addr;
65 addr = mmap(NULL, num*PAGE_SIZE, prot, MAP_SHARED, xc_handle, 0);
66 if ( addr == MAP_FAILED )
67 return NULL;
69 ioctlx.num=num;
70 ioctlx.dom=dom;
71 ioctlx.addr=(unsigned long)addr;
72 ioctlx.arr=arr;
73 if ( ioctl(xc_handle, IOCTL_PRIVCMD_MMAPBATCH, &ioctlx) < 0 )
74 {
75 int saved_errno = errno;
76 perror("XXXXXXXX");
77 (void)munmap(addr, num*PAGE_SIZE);
78 errno = saved_errno;
79 return NULL;
80 }
81 return addr;
83 }
85 void *xc_map_foreign_range(int xc_handle, uint32_t dom,
86 int size, int prot,
87 unsigned long mfn)
88 {
89 privcmd_mmap_t ioctlx;
90 privcmd_mmap_entry_t entry;
91 void *addr;
92 addr = mmap(NULL, size, prot, MAP_SHARED, xc_handle, 0);
93 if ( addr == MAP_FAILED )
94 return NULL;
96 ioctlx.num=1;
97 ioctlx.dom=dom;
98 ioctlx.entry=&entry;
99 entry.va=(unsigned long) addr;
100 entry.mfn=mfn;
101 entry.npages=(size+PAGE_SIZE-1)>>PAGE_SHIFT;
102 if ( ioctl(xc_handle, IOCTL_PRIVCMD_MMAP, &ioctlx) < 0 )
103 {
104 int saved_errno = errno;
105 (void)munmap(addr, size);
106 errno = saved_errno;
107 return NULL;
108 }
109 return addr;
110 }
112 int xc_map_foreign_ranges(int xc_handle, uint32_t dom,
113 privcmd_mmap_entry_t *entries, int nr)
114 {
115 privcmd_mmap_t ioctlx;
117 ioctlx.num = nr;
118 ioctlx.dom = dom;
119 ioctlx.entry = entries;
121 return ioctl(xc_handle, IOCTL_PRIVCMD_MMAP, &ioctlx);
122 }
124 static int do_privcmd(int xc_handle, unsigned int cmd, unsigned long data)
125 {
126 return ioctl(xc_handle, cmd, data);
127 }
129 int do_xen_hypercall(int xc_handle, privcmd_hypercall_t *hypercall)
130 {
131 return do_privcmd(xc_handle,
132 IOCTL_PRIVCMD_HYPERCALL,
133 (unsigned long)hypercall);
134 }
136 int xc_evtchn_open(void)
137 {
138 int fd;
140 if ( (fd = open("/dev/xen/evtchn", O_RDWR)) == -1 )
141 {
142 PERROR("Could not open event channel interface");
143 return -1;
144 }
146 return fd;
147 }
149 int xc_evtchn_close(int xce_handle)
150 {
151 return close(xce_handle);
152 }
154 int xc_evtchn_fd(int xce_handle)
155 {
156 return xce_handle;
157 }
159 int xc_evtchn_notify(int xce_handle, evtchn_port_t port)
160 {
161 struct ioctl_evtchn_notify notify;
163 notify.port = port;
165 return ioctl(xce_handle, IOCTL_EVTCHN_NOTIFY, &notify);
166 }
168 evtchn_port_t xc_evtchn_bind_unbound_port(int xce_handle, int domid)
169 {
170 struct ioctl_evtchn_bind_unbound_port bind;
172 bind.remote_domain = domid;
174 return ioctl(xce_handle, IOCTL_EVTCHN_BIND_UNBOUND_PORT, &bind);
175 }
177 evtchn_port_t xc_evtchn_bind_interdomain(int xce_handle, int domid,
178 evtchn_port_t remote_port)
179 {
180 struct ioctl_evtchn_bind_interdomain bind;
182 bind.remote_domain = domid;
183 bind.remote_port = remote_port;
185 return ioctl(xce_handle, IOCTL_EVTCHN_BIND_INTERDOMAIN, &bind);
186 }
188 int xc_evtchn_unbind(int xce_handle, evtchn_port_t port)
189 {
190 struct ioctl_evtchn_unbind unbind;
192 unbind.port = port;
194 return ioctl(xce_handle, IOCTL_EVTCHN_UNBIND, &unbind);
195 }
197 evtchn_port_t xc_evtchn_bind_virq(int xce_handle, unsigned int virq)
198 {
199 struct ioctl_evtchn_bind_virq bind;
201 bind.virq = virq;
203 return ioctl(xce_handle, IOCTL_EVTCHN_BIND_VIRQ, &bind);
204 }
206 static int dorw(int fd, char *data, size_t size, int do_write)
207 {
208 size_t offset = 0;
209 ssize_t len;
211 while ( offset < size )
212 {
213 if (do_write)
214 len = write(fd, data + offset, size - offset);
215 else
216 len = read(fd, data + offset, size - offset);
218 if ( len == -1 )
219 {
220 if ( errno == EINTR )
221 continue;
222 return -1;
223 }
225 offset += len;
226 }
228 return 0;
229 }
231 evtchn_port_t xc_evtchn_pending(int xce_handle)
232 {
233 evtchn_port_t port;
235 if ( dorw(xce_handle, (char *)&port, sizeof(port), 0) == -1 )
236 return -1;
238 return port;
239 }
241 int xc_evtchn_unmask(int xce_handle, evtchn_port_t port)
242 {
243 return dorw(xce_handle, (char *)&port, sizeof(port), 1);
244 }